this is a demo in demo videos the accuracy is always perfect even with poor machinery. There should be some real user videos. I remember 8 years ago when I bought my first machine (not from neoden) it was a single head piss and place machine, the results were awful, the company never fixed the issues even after shipping the whole pile of garbage back to them they even added more serious issues (eg. oscillating gantry) and then the company owners retired. I end up fixing everything myself an absolute horror.... still the demos looked perfect, and the usual comment no customer ever experienced issues (just because the machines were expensive enough so not too many customers bought them. I found a few of their customers also having issues and they did not care). That machine was not even able to pick and place HASL PCBs, the optical recognition always re-evaluated the fiducials and HASL based PCBs reflect the light into every direction poor software should at least have an option for manual locking, good machinery can handle such PCBs without any problem (I've seen Juki, ASM, Yamaha handling that properly).